"Production has been interrupted since the end of October," the company said in a statement emailed to United Press International.
Simmering conflict in Libya since civil war ended in 2011 has curtailed the country's oil and natural gas production.
Rival groups in the east of the country announced in early November they declared independence for the region known as Cyrenaica, which hosts some of Libya's key oil terminals. Labor strikes have shut down processing facilities in the west of the country.
OMV said it evacuated its personnel from Libya when conflict erupted in February 2011 but re-opened its office in Tripoli 10 months later.
The company announced Oct. 21 an oil discovery in Libya, made with partners Repsol and Total, was its first since the country's 2011 revolution.
The company didn't respond to questions related on what caused the interruptions. As of 2012, OMV said it was producing, on average, 29,500 barrels of oil equivalent per day in Libya.